Grounding devices ZPP are intended for protection workers on the disconnecting parts of switchgears from electric shock in the case of mistaken feed of voltage to this part.
The main parameters of grounding device:
|Name of parameter||ZPP-1||ZPP-15||ZPP-35||ZPP-110||ZPP-220|
|Nominal voltage of electrical installations, kV||1||15||35||110||220|
|Length of insulating rods, m, not less||0,06||0,70||1,10||1,40||2,50|
|Length of handle, m, not less||0,12||0,30||0,40||0,60||0,80|
|Length of grounding conductor, m, not less||2,0||2,5||7,0||10,0||10,0|
|Length of each short-circuiting conductor, m, not less||0,4||1,25||2,5||3,5||7,0|
|Number of clamps, р||3||3||3||3||3|
|Number of insulating rods, p||3||3 (1*)||1||1||1|
|Section of conductor, mm2 , not less||16||25||25||25||25|
|Current of thermal stability during 3 sec., kA||2,5||4,0||4,0||4,0||4,0|
|Mass, kg, not more||2,0||5,4 (3,9*)||7,0||9,0||12,0|
* – The complete set with one insulating rod.
Portable grounding device for switchgears 0,4 kV are manufactured in three-phase modification as a single unit. All other portable grounding device for switchgears are modification and clamps are connected with insulating rod by means of butting block with screw compression.
According to customer’s demand portable grounding device for switchgears can include one or three grounding rods.
For long exploitation life portable grounding device ZPP are supplied in cases from synthetic wear proof cloth or (according to separate demand) in wood boxes.